It won't work.
Issac suggested an STI headset "Standard to Integrated" which allow you to use your integrated bearings but the new headset will come with bearing anyway.
$21.99
the RUP lock nut only works with Standard head sets and that "Trick" is for using THREADED forks on a standard threadless headset.
But you still need to buy a Standard Threadless headset with Cups to replace the RUP headset & Cups.
Your Integrated headset is only good for head Tubes with integrated cups.
Either the STI headset or a Standard headset- you still need a new headset.